| $MnO_2$를 첨가한 PZT 세라믹스의 압전열화 및 기계적 특성 |
| 김종범, 최성룡, 윤여범, 태원필, 김송희1 |
강원대학교 재료공학과
1포항공대 항공재료 연구센터 겸직 |
| The Piezoelectric Degradation and Mechanical Properties in PZT Ceramics with $MnO_2$ Addition |
|
|
|
|
|
|
|
| ABSTRACT |
|
The aim of this study was to investigate the degradation of piezoelectric properties with compressive cy-clic loading, the change in bending strength before and after poling treatment and fracture strength in MPB depending on the amount of MnO2 addition. The MPB with 0.25 wt.% MnO2 showed the best resistance against the piezoelectric degradation with compressive cyclic loading. Bending strength increased when pol-ing and loading directions are parallel, however decreased when poling and loading directions are per-pendicular each other. Because, during poling treatment, compressive residual stress is generated in the pol-ing direction but tensile residual stress in the perpendicular direction to poling direction. |
| Key words:
$Pb(Zr, Ti)O_3$, Piezoelectric property degradation, Cyclic loading, Mechanical properties, Residual stress, $MnO_2$, addition |
|
PDF Links
Full text via DOI 
Download Citation 
